The Emerald Ash Borer is a highly destructive invasive beetle that infests ash trees. It has killed millions of ash trees in North America and poses a major environmental threat to urban and forested areas in Hamilton. It has the potential to destroy Hamilton’s entire Ash tree population by the year 2020.
Mountain Ash is not in the same family and is not affected by the Emerald Ash Borer.
For Ash Tree & EAB identification view What is an Emerald Ash Borer (EAB)?
Ash trees are an important part of Hamilton’s urban and rural landscape. They are commonly found on city streets, woodlots, windbreaks and forests.
An Ash tree typically has:
- Opposite branching, so leaves and twigs are in opposite positions on the stem, not staggered.
- Compound leaves – leaves that have more than one leaflet, while the entire leaf has one bud at its stem base. The leaflets are positioned opposite with one at the top. Ash trees typically have five to nine leaflets per leaf.
- Rigid bark with diamond-shaped ridges (on a mature tree).
- Seeds that hang in clusters and are dry and oar-shaped.
How Emerald Ash Borers spread
The Emerald Ash Borer spreads naturally through beetle flight; the beetle is capable of flying distances of 5 km in search of a host tree. The Emerald Ash Borer is also spread by people moving material infested with the beetle such as firewood and nursery stock. The Canadian Food Inspection Agency regulates the movement of material outside the quarantined area.
Removal & Treatment of Infected Trees
In Road Allowance
The City will remove an infested ash tree from your property if it is located within the road allowance. If the tree in your front yard is showing signs of being infested with the emerald ash borer, call 905-546- 2489 to have your tree assessed. The City will plant a replacement tree once the infested tree and stump is removed.
On Your Property
You are responsible for all trees that are not on the City’s road allowance. This includes the treatment, removal and disposal of dying or dead Ash trees. Contact an arborist to discuss your options.
If you elect to have your tree removed, ensure that the materials are not moved outside the CFIA quarantined area. The wood and mulch can be utilized for firewood and landscape use within this area.
Contact the Canadian Food Inspection Agency at 1-866-463-6017 or Phytosanitary Requirements to Prevent the Introduction into and Spread within Canada of the Emerald Ash Borer for further information.